I saw some dumb movie about a time travel loop a few months back, I don't even remember the name. The plot was so uninspired, I started to think about how to prevent time loops from ever occurring, so at least that kind of lazy writing won't invade nonfiction. It sort of snowballed into a hardware design.
It's definitely the dumbest reason I've had to build a particle detector. The idea is to generate output that would be different in every iteration (via no-hidden-variables + a tunneling-governed radioactive decay), to determine whether you are in a loop via a simple statistical test.
If that poses a problem for something you will have been working on, just reach out by December 1st, 2023 with the one-time-code "19 8 9 2 2 15 12 5 20 8 ". I will have recognized that, and we could have planned around what your needs will have been.
Well, the false-positive rate for people claiming to be time travelers will have been pretty high, if we are going to have been honest. At least in the reverse direction.
I'll also have concluded that the verb tenses will have been miserable. We will have needed a less cumbersome language. Maybe I'll have solved that, someday.
I mean try untangling 'You will have had to have had had had traveled'. Bit of a pain to discuss iterations of a loop, and that's not even that many deep.